Detect "next" button click to use certain logic for the certain step.

[fromnt34]

I need to make it that way: if you press the "next" button, the step is validated while using a certain logic. I know that there was already a similar problem but there as a solution was suggested to use the method beforeNextStep:

methods: {
    beforeNextStep({ currentStep }, next) {
    // Here your logic
    ........
    
    // Then next
    next();
}

How I can use a certain logic for a certain step in this case is not clear, since in currentStep there is only name and index.
Thanks.